Unmanned aerial vehicles (UAVs) or drones are valuable scientific instruments in Antarctica but are not toys for tourists. That’s the ruling from the latest meeting of the International Association of Antarctica Tour Operators (IAATO). For the upcoming 2015-2016 season, the IAATO members have agreed not to allow the recreational use of drones in the coastal areas of Antarctica. …
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The number of tourists to Antarctica for the 2015/2016 season is expected to be the second largest in history with 40,029 visitors. The International Association of Antarctic Tour Operators (IAATO) reports only the 2007/2008 season had higher numbers with 46,265 people. …
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In this podcast, we speak to Michael Smith about Tom Crean and his heroic exploits in Antarctica during three of the great polar expeditions, under the leadership of Scott and Shackleton. …
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Icebergs are created when large chunks of freshwater ice break off Antarctic ice shelves or glaciers and calve into the Southern Ocean. To be classified as an iceberg, the ice extruding from the water must be at least five metres above sea level, be between 30-50 metres thick, and must cover an area of at least 500 square meters. Icebergs can have a direct effect on the sea bed, scouring the seafloor where it makes contact.
But who monitors icebergs? And how big can they get? …
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Peter Beggs of Antarctica New Zealand talks about his countries long-standing commitment to science research on the ice, and the permanent station on Ross Island, Scott Base, established in 1957. …
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This conference brought together international experts and NZ’s leading policy makers, scientists and industry representatives, to showcase adaptation strategies for managing sea level rise in NZ. …
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Elephant seals become Antarctic researchers

Oceanographic instruments attached to Antarctic elephant seals help scientists better understand the role melting ice shelves are having in regulating global ocean temperatures.

Research published in August in Nature Communications has used elephant seals to demonstrate that fresh water from Antarctic’s melting ice shelves slows the processes responsible for the formation of deep-water ocean currents that regulate global temperatures.

The research paper, led by Dr Guy Williams from the Institute of Marine and Antarctic Studies and Antarctic Climate and Ecosystems CRC, said the findings were significant for the global climate.

Dr Williams said the findings raised questions about potential future changes in the global ocean and climate systems.

“Antarctica and the Southern Ocean are like a beating heart, producing deep and powerful currents of cold water that drive global ocean mixing and regulate atmospheric temperatures,” Dr Williams said.

“These currents begin with intense sea ice formation around the Antarctica in winter, which creates cold, salty and dense water that sinks and flows away from the continent in enormous volumes.”

“If this production of Antarctic bottom water weakens, it leads to changes in global ocean circulation patterns that can lead to changes in the global climate.”

In 2011, the same team of researchers discovered an important fourth source of this cold, salty and dense water – known as Antarctic bottom water – off Cape Darnley in East Antarctica.

The latest research published today, including an additional two years of data, shows that Prydz Bay makes an important secondary contribution to Cape Darnley bottom water.

“However we found that the contribution from Prydz Bay is less salty and dense due to the influence of fresh water by nearby ice shelves,” Dr Williams said.

“We can easily imagine that the production of these global ocean currents will slow as the rate of ice shelf melting all around Antarctica continues to increase.”

Since 2011, elephant seals at Davis Station have been instrumented with oceanographic sensors as part of Australia’s Integrated Marine Observing System (IMOS). The seal tagging component of IMOS is made possible with logistical support and funding from the Australian Government’s Australian Antarctic Program.

When the seals surface, their sensors relay information back to land via satellite, and the near real-time data is made available via the Global Telecommunication System of the World Meteorological Organization for immediate use. IMOS also makes the data available via their data portal. The oceanographic data collected by the seals is also used for ecological research into their behaviour and aids in conservation

“This study would have been virtually impossible without help from the seals, who can gather oceanographic data from areas that tend to be very difficult to access in research ships,” Dr Williams said.

“Seals have the advantage of continuing to forage and record ocean properties through the winter, exploiting small cracks and leads in the sea ice cover to breathe and allow for data transmission.

“Taking measurements in each region using traditional scientific moorings would be prohibitively expensive.”

“The seals are doing an outstanding job and the result is an important advance in our understanding of the global ocean system.”